Means for locking the steering-heads of cycles.



' H. JANSEN. MEANS FOB LOCKING THE STEERING HEADS 0F CYCLES.

APPLICATION FILED PEB. 17,1908.

f' Patented Nov. 1o, Y1908Y A afnaninnl I l nllllillllll Steeri UNITED stra HERMAN JANSEN, 0F SCHIEDAM. NETHERLANDS.

MEANS FOR LOCKING' TH STEERING-HEADS OF CYCLES.

To alllwhom'z't may concern.' g

Be it known .that I, HERMAN JANsEN, a

subject of the Queen'of Holland, residing at,

Schiedam, Netherlands, have invented new and useful Improved Meansfor Locking the ng-Heads of Cycles, of which the following is a specification.

This invention' relates to improved mean for locking the steering heads of c vcles.

According to the invention form the steerino head .and the post or pillar earryini the for and which turns within the said steering head with a hole, the said two holes beinir adapted to be brought opposite to one another in which io'sition they can receive a in or plug provi ed with one or more gravit orother suitable catches which engage with, or lock against, the inside of the post or pillar or of the steering head thus efiectually preventing the relative movement of the post or illar and the steering head. o enable the pin or plu" to -b'e released it is made hollow tope-rmit oiatheiitsertion ol' n key which disenga .es the catch or catches, thereby enabling t ie removed.

It wili be understood that the in or plugr andthe key can be -so constructed that each device canonly 'ne locked and unlocked by a key speciall Iliade for the purpose.

To enable t e invention to be fully understood I will describe it by reference to the accompanying drawing, in which Figure 1 is aside view of the steering head I of a cycle adapted to be locked aecordinnr to the invention. Fi Y. 2 is a section 'in the-lime. 22, F w. 1, and s owing the locking pin or plug in place; Fig. i5 is a view similar to Fig.

2 but s lowing the key inserted in the plug for the purpose. of removing the saine. Fig. 4 is an end view ol the lockine plug. Fig.' 5

is a side view of thel saine. view of the key for Aunlocking the device. Fig. 7 is a side view of a in'mliled form of locking ilug. Fig. S is an end view ol' the saine. li`igs. i) and 1l) are an end' view and a side view respectively of the. key loi' use with the modified form of ilug.

Referring rii'st to li gs. 1 to (i, u is the posty I or pillar carrying the, l'ork b of the cycle and c is the steering head which is mounted upon thc'said postor pillar u.- (l is the hole which is formed in the post or pillar a and l' is the correspoinling hole which is made in the stccringdiead c. fis the pin or plug which is provided with a number l(in the drawing Specification o! Lettera Patent. Application filed February 17, 1908.

said pin or plug to be l* ig. 6 is a plan Patented Nov. 10, 190B.

Serial No. 416,369.

three) of pivoted gravity entf-hes (l, g. The

pin o r plugfis made hollow, ns shown, in order to permit of the insertion of n. key, such as that shown in Figs. 3 and (5.. lhis key comprises the thumb-piece h and the shank 'L which is of a size to enter the hollow plug f, and has secured to it a spring so that when inserted in the said plug f the spring lrictionally holds it in place for the purpose hereinafter described.

The device is used as follows, that is to say, the holes d and e in the post or pillarV a and the steering head b respectively are brought opposite to one anotherI as shown in Fig. 2, and the )lug f is then pushed into the two holes. when the plug is thus inserted it is turned until one of the catches q drops under 'the action of gravity as shown in lig. 2, in which position its outer end bears against the inner surf ace of the steering post a., thus securely locking the said steering head to the )ost or pillar a.. To release the steering head it is merely necessary `to insert the key, the shank i of which pushes' up the inner end of the locking catch g so that the plu f is free to be removed with the key to w ich it is caused to adhere by means of thefriction of the sprinr 7.

' lt will zbe understood, as above described, that each individual locking device can be constructed so that it can be o ened only by a specially niade ke i. The evice can, for example, be of the s ia e shown in the com struction above descri ed, or it may be of any other convenient construction such, for instance, as Vthat illustrated in Figs; 7 to 10. In this ease the bore of the lug f i's provided with internal projections [gi/)c and the shanki \of the key is made with grooves or recesses n to the said ermits of the key l Lin a position coi'respondin )rojeciions lc, k, so that it l l'ion f inserted in thesaid ore when it is desire( to remove thel lockin device.

ll'avin'g now particular y described and ascertained thenature ol' my said invention and in what manner the saine is to be performed, l declare that what I claim is l. Means for locking the steering heads of cycles, comprising a hollow )in or plug havin'g onc'or more catches, and ioles formed re spectively in the. sleeringfhead and tho pillar or )ost upon which the said head is mounted and into which holes the piu or plug is inserted, scribed.

2. The combination with a cycle steering substantially' as hereinbefore hem] und Post m' pillzwy mmh olE which is pm- F m' mum mib-hva', .wuvll )an m' plugj vided will n hule, uf n hollow adapted to he lncrbml into the. sind holes mul hglvmg one or more dull-hes engaging wnh the inner surface of the Suid pos or pillar or 0f,the steering head SQ as t-o luck thug@ twv arts "together, substanl iall y as Ihereinhefuro, ascribed.

3. Allocking device for the stealing heads of cy'l'ps comprising; a hgllow plug mlnrptml to baviserted into hule-S in Lhl steering hund. 

